DISEASES OF THE SKIN AND EYE. 81 



treated as a fresh wound. Applications of iodine and glycerin in 

 equal parts, or of the three sulphates, may be beneficial. 



SCRATCHES. 



Scratches is allied to grease and results from similar causes; it is 

 not so severe, but if neglected may terminate in that disease. It is 

 usually of a dry nature, with shallow cracks in the skin, and often 

 discharging a thin liquid, which does not irritate the skin. The dis- 

 ease is iQcated in the back part of the pastern joint. 



Treatment. — Cleanse thoroughly with castile soap and water, dry, 

 and apply : Sulphate of zinc 1 ounce, acetate of lead 1 ounce, water 1 

 quart. Or, oxide of zinc 1 part, lanolin 10 parts. Or, tincture of 

 iodine may be resorted to. Good results are obtained by a dressing 

 of equal parts of zinc oxide and acetanilid, kept in place by a piece of 

 gauze or cotton and a bandage. 



SCABIES MA NGE . 



This is a contagious skin disease produced by parasites and can be 

 transmitted to man. 



There are three parasites that cause mange; two varieties burrow 

 into the deeper layers of the skin, the first being found about the 

 head and neck (though it may spread over the surface of the body), 

 the second at the roots of the mane and tail; the third species does 

 not burrow into the skin and is found on the extremities. 



Symptoms. — ^This disease is characterized by great itching associ- 

 ated with the formation of pustules (pimples). As the disease 

 developes, large surfaces become destitute of hair and are covered 

 by powdery crusts of variable thickness. At a later period the skin 

 becomes thickened, wrinkled, and fissured, assuming the appearance 

 of the skin of the rhinoceros. 



Treatment. — The first essential is the separation and isolation of 

 the unhealthy from the well animals. Wash the affected parts 

 thoroughly with warm water, soap, and a scrubbing brush, and 

 apply the following: Acetanilid 10 parts, creolin 5 parts, cosmoline 

 20 parts. Melt the cosmoline and mix with the other ingredients 

 while cooling. This ointment should be applied twice a day and the 

 parts thoroughly washed every other day. Continue the treat- 

 ment until the skin becomes healthy. 



SIMPLE INJURIES TO THE EYELIDS. 



Inflammation of the mucous membrane lining the eyelids may be 

 caused by bruises or the presence of a foreign body, such as sand, 

 chaff, etc. If the eyelids should become torn, they must be sutured ; 



